Chess Puzzle #F3Ajz — Master, White to move, endgame

Position

White: king b2; bishop g5; pawns b6/d3/d5/f4/h4. Black: king d7; bishop e2; knight g6; pawns a2/f5. Material is balanced. White to move.

Solution (4 moves)

1. Opponent setup: Bxd3 — bishop e2→d3, captures pawn. Now White to move.
2. Best move: b7 — pawn b6→b7. Opponent replies Kc7 (king d7→c7).
3. Best move: d6+ — pawn d5→d6, gives check. Opponent replies Kxb7 (king c7→b7, captures pawn).
4. Best move: d7 — pawn d6→d7. Opponent replies a1=Q+ (pawn a2→a1, promotes to queen, gives check).
5. Best move: Kxa1 — king b2→a1, captures queen.

Tactical themes

advanced pawn, crushing, endgame, exposed king, very long. The key move is b7.

Position data

FEN: 8/3k4/1P4n1/3P1pB1/5P1P/3P4/pK2b3/8 b - - 1 43

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